Subfamily
Petalolithinae Bulman, 1955
Selection of related publications
Maletz, J., Ahlberg, P., Suyarkova, A., Loydell, D. K. 2014. Silurian graptolite biostratigraphy of the Röstånga-1 drill core, Scania – a standard for southern Scandinavia. GFF 136, 1, 175-178. DOI:10.1080/11035897.2013.865665
Loydell, D. K., Nestor, V., Männik, P. 2010. Integrated biostratigraphy of the lower Silurian of the Kolka-54 core, Latvia. Geological Magazine 147, 2, 253-280. DOI:10.1017/S0016756809990574
Loydell, D. K., Männik, P., Nestor, V. 2003. Integrated biostratigraphy of the lower Silurian of the Aizpute-41 core, Latvia. Geological Magazine 140, 2, 205-229. DOI:10.1017/S0016756802007264
Ulst, R. 1986. Osobennosti stroeniâ proksimpli u nekotoryh llandoverijskih graptolitov Latvii.Biofacies and fauna of the Silurian and Devonian basins of the Baltic , pp. 22-24. Zinatne.
Ulst, R. Ž., Gailite, L. K., Springis, T. K. 1984. Lithostratigraphic subdivision of the subsurface Ordovician rocks of the Jelgeva Depression.Stratigrafiâ drevnepaleozojskih otloženij Pribaltiki , pp. 63-76. Eesti NSV Teaduste Akadeemia.
Paškevičius, J. 1979. Biostratigraphy and Graptolites of the Lithuanian Silurian. pp. 1-267. Mokslas.
Kaljo, D., Vingisaar, P. 1969. On the sequence of the Raikküla stage in southernmost Estonia. Eesti NSV Teaduste Akadeemia Toimetised. Keemia, Geoloogia / Известия Академии наук Эстонской ССР. Химия. Геология 18, 3, 270-277. DOI:10.3176/chem.geol.1969.3.10
Gailite, L. K., Rybnikova, M. V., Ulst, R. Ž. 1967. Stratigrafiâ, fauna i usloviâ obrazovaniâ silurijskih porod Srednej Pribaltiki. pp. 1-304. Zinatne.
Thorslund, P. 1948. On the Silurian beds above the Pentamerus limestone in Jemtland. Description of fossils. Sveriges Geologiska Undersökning 42, 3, 1-37.
List of species
1. Cephalograptus cometa (Geinitz, 1852) | Llandovery
2. Comograptus barbatus (Elles et Wood, 1907) | Llandovery
3. Comograptus comatus Obut et Sobolevskaya, 1968 | Llandovery
4. Dimorphograptoides physopora (Nicholson, 1868) | Llandovery
5. Parapetalolithus altissimus (Elles et Wood, 1908) | Llandovery
8. Parapetalolithus kunkojensis (Paškevičius, 1979) | Llandovery
9. Parapetalolithus ovatus (Barrande, 1850) | Llandovery
11. Parapetalolithus schaueri (Loydell, 1991) | Silurian
12. Parapetalolithus tenuis (Barrande, 1850) | Llandovery
13. Petalograptus parallelus Paškevičius, 1979 | Llandovery
14. Petalolithus dubovikovi (Obut et Sobolevskaya, 1967) | Silurian
15. Petalolithus folium (Hisinger, 1837) | Silurian
16. Petalolithus intermedius Bouček et Přibyl, 1941 | Llandovery
17. Petalolithus minor (Elles, 1897) | Llandovery
18. Petalolithus ovatoelongatus (Kürck, 1881 ) | Silurian
19. Petalolithus praecedens Bouček et Přibyl, 1941 | Llandovery
20. Petalolithus praecursor Bouček et Přibyl, 1941 | Silurian
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Graptoloidea |
| Suborder | Axonophora |
| Superfamily | Retiolitoidea |
| Family | Retiolitidae |
| Subfamily | Petalolithinae |
| Genus | Agetograptus |
| Cephalograptus | |
| Comograptus | |
| Dimorphograptoides | |
| Dischidograptus | |
| Dittograptus | |
| Hercograptus | |
| Parapetalolithus | |
| Petalograptus | |
| Petalolithus | |
| Pseudorthograptus | |
| Rivagraptus | |
| Spinadiplograptus | |
| Victorograptus | |
| Subfamily | Plectograptinae |
| Retiolitinae |